Ex vivo shunt testing of hydrogel-silicone rubber composite materials

1982 ◽  
Vol 16 (4) ◽  
pp. 471-500 ◽  
Author(s):  
Bradley H. Vale ◽  
Raymond T. Greer
Keyword(s):  
Composite Materials ◽  
Silicone Rubber ◽  
Ex Vivo ◽  
Rubber Composite

Study on Short Basalt Fiber Reinforced Silicone Rubber Composites

2013 ◽  
Vol 800 ◽  
pp. 383-386 ◽  
Author(s):  
Wei Li Wu ◽  
Jin Yue Cai
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Silicone Rubber ◽  
Basalt Fiber ◽  
Rubber Composites ◽  
Excellent Performance ◽  
Elongation At Break ◽  
Rubber Composite ◽  
Insulating Properties ◽  
Ozone Resistance

Silicone rubber has excellent performance, such as cold resistance, heat resistance, ozone resistance, thermal properties and insulating properties and so on. However, silicone rubber is in the state of semi-liquids and it is very soft, so the mechanical properties of silicone rubber are very poor. In order to improve its availability of silicone rubber, short basalt fiber / silicone rubber composite materials were prepared by using short basalt fiber as reinforcement, and its mechanical properties and compatibility were studied. The best formulation of short basalt fiber / silicone rubber composite materials were determined by testing Shore A hardness, tensile strength and elongation at break, and the morphology structure and compatibility of short basalt fiber / silicone rubber composite materials were discussed by scanning electron microscope and infrared spectrum, prepare excellent performance of silicone rubber composite materials.

Enhancing the Piezoresistance Senstivity and Repeatability of Carbon Nanotube/Silicone Nanocomposites

2014 ◽  
Vol 590 ◽  
pp. 207-210
Author(s):  
Xiao Xiang Zhang ◽  
Long Ba
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Composite Materials ◽  
Carbon Black ◽  
Silicone Rubber ◽  
Smart Materials ◽  
Biomedical Engineering ◽  
Rubber Composites ◽  
Rubber Composite ◽  
Percolation Network

The nanocomposites of carbon nanotube/polymer have been studied to explore their piezoresistance properties, which can be used as smart materials in the fields like biomedical engineering, robotic engineering, and advanced instrumentation. The differences in piezoresistance behavior of the previous studies were explained by the less uniformity of carbon nanotubes. To clarify the resistance versus deformation relations for carbon nanotube/silicone rubber composite materials, we have fabricated composite materials with various nanotube and carbon black contents. The measurements show that the resistance versus deformation sensitive range is depends on both the content of nanotube and carbon black, while the tiny variation of content of the carbon black affects largely the total piezoresistance sensitivity and repeatability. The experiment shows that adequate amount of carbon balck mixed with carbon nanotube can improve the piezoresistance repeatability. The deformation induced variation of the conducting percolation network shall be the dominating mechanism for the piezoresistance behavior of carbon nanotube/silicone rubber composites.

Aging behaviors of silicone rubber composite materials under outdoor environment

2016 ◽  
Vol 31 (6) ◽  
pp. 1289-1293 ◽  
Author(s):  
Zhen Huang ◽  
Hongsheng Lin ◽  
Xiangyang Peng ◽  
Zheng Wang ◽  
Rui Wang ◽  
...  
Keyword(s):  
Composite Materials ◽  
Silicone Rubber ◽  
Outdoor Environment ◽  
Rubber Composite

scholarly journals Preparation of Bamboo-Like Carbon Nanotube Loaded Piezoresistive Polyurethane-Silicone Rubber Composite

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2144
Author(s):  
Mohammed Nabeel ◽  
Miklós Varga ◽  
László Kuzsela ◽  
Ádám Filep ◽  
Béla Fiser ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Silicone Rubber ◽  
Dip Coating ◽  
Nitrogen Doped ◽  
Novel Technology ◽  
Pu Foam ◽  
Rubber Composite ◽  
Finger Touch ◽  
Human Monitoring ◽  
Strength And Durability

In this study, a novel technology is reported to prepare a piezoresistive polyurethane-silicone rubber nanocomposite. Polyurethane (PU) foam was loaded with a nitrogen-doped bamboo-shaped carbon nanotube (N-BCNT) by using dip-coating, and then, impregnated with silicone rubber. PU was used as a supporting substrate for N-BCNT, while silicone rubber was applied to fill the pores of the foam to improve recoverability, compressive strength, and durability. The composite displays good electrical conductivity, short response time, and excellent repeatability. The resistance was reduced when the amount of N-BCNT (0.43 wt %) was increased due to the expanded conductive path for electron transport. The piezoresistive composite has been successfully tested in many applications, such as human monitoring and finger touch detection.

Electromechanical-Conductive Natural Rubber Doped Eggshell and Eggshell Membrane for Drug Delivery and Actuator Applications

2018 ◽  
Vol 934 ◽  
pp. 43-49
Author(s):  
Poramin Boonprasert ◽  
Nuchnapa Tangboriboon
Keyword(s):  
Composite Materials ◽  
Natural Rubber ◽  
Artificial Muscle ◽  
Eggshell Membrane ◽  
Curing Time ◽  
Electrical Field ◽  
Fibrous Protein ◽  
Rubber Composite ◽  
Field Response ◽  
Biomimetic Actuator

Natural rubber composite materials were prepared by using sulfur curing system of STR 5L added with hen eggshell and eggshell membrane to increase electrical and mechanical properties for biomimetic actuator and artificial muscle applications. Samples were vulcanized at temperature 150°C. Hen eggshells and eggshell membrane powder (0, 20, 40, and 60 phr) were added into natural rubber. The main composition of hen eggshells composed of 96.35 wt% calcium carbonate (CaCO3) while mostly composition of hen eggshell membrane is fibrous protein in terms of collagen. The best condition is addition of eggshell 40 phr (formula 3) and eggshell membrane 20 phr (formula 5) to obtain the highest storage modulus response equal to 2.85 x 106 and 2.97 x106 Pa, respectively. The curing time (Tc90) of pure natural rubber (formula 1), formula 3, and formula 5 are 8.22, 6.73, and 5.67 min, respectively. Furthermore, the curing time, rheology, and electrical field response of natural rubber composite materials were measured by moving die rheometer and impedance analyzer, and reported here.

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